Here is the prototype tone control wired just as in the diagram. It works satisfactory, the bass control is smooth and just enough cut and boost. The treble control is subtle, but does just make a noticeable difference, it is wired backwards at the moment for layout convenience.
I now need to decide how I an going to finish it, probably veroboard.
It is supplied from the ear phone socket of my workshop DAB radio, the tone circuit has still left plenty of drive for the Z30.
Normal listening levels are with the DAB on 7 or 8 (out of 30) and the Z30 goes into just noticeable distortion at about 13/30 on the DAB volume.
The power capability of the Z30 is at the moment limited by the 14v PSU. If the PSU was changed for one of 25 or 30 volts then it would make a noticeable difference to the volume and be pretty ear splitting in my small workshop room. I am not too sure if the speakers would handle the 15 theoretical watts at 25 volts. It is not recommended to take the Z30 to its full 30 volts max supply with a 3 ohm speaker.
What would be the best values and which components to change to give a little more treble cut and boost?
thanks
Mike
I now need to decide how I an going to finish it, probably veroboard.
It is supplied from the ear phone socket of my workshop DAB radio, the tone circuit has still left plenty of drive for the Z30.
Normal listening levels are with the DAB on 7 or 8 (out of 30) and the Z30 goes into just noticeable distortion at about 13/30 on the DAB volume.
The power capability of the Z30 is at the moment limited by the 14v PSU. If the PSU was changed for one of 25 or 30 volts then it would make a noticeable difference to the volume and be pretty ear splitting in my small workshop room. I am not too sure if the speakers would handle the 15 theoretical watts at 25 volts. It is not recommended to take the Z30 to its full 30 volts max supply with a 3 ohm speaker.
What would be the best values and which components to change to give a little more treble cut and boost?
thanks
Mike
